Vernier does not currently carry any type of microelectrode. This includes pH, dissolved oxygen, and/or any type of ion-specific microelectrode.

If you are looking for microelectrodes for your application, you may want to contact Microelectrodes, Inc. See the link below.

http://www.microelectrodes.com/

If you are looking for microelectrodes for dissolved oxygen, you may want to contact Pyro Science. See the link below.

http://www.pyro-science.com/

Please note that products from these vendors are not currently compatible with Logger Pro.